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Fluid bearing

A fluid bearing and rotating shaft technology, applied in the field of fluid bearings, can solve the problems of oil leakage and unsatisfactory leakage prevention effect, and achieve the effect of good leakage prevention effect.

Inactive Publication Date: 2008-02-20
FU ZHUN PRECISION IND SHENZHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fluid bearing using this kind of "herringbone" groove 2, because the oil storage space of the intersection area 8 is equal to the oil storage space of the upper and lower edges 4, 6, when the bearing is running, the lubricating oil is easily squeezed by the rotating shaft. Pressure and leak outward, the leak-proof effect is not ideal, therefore, the industry hopes to design a fluid bearing with good leak-proof effect

Method used

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Embodiment Construction

[0016] Please refer to Fig. 2, the fluid bearing includes a rotating shaft 20 and a shaft sleeve 30 that can rotate relatively, a lubricating fluid is provided between the rotating shaft 20 and the shaft sleeve 30, and at least one of the shaft sleeve 30 and the rotating shaft 20 is provided with a groove Area 10, the grooved area 10 includes a number of grooves 12 for containing lubricating fluid. When the rotating shaft 20 is running, the lubricating fluid generates dynamic pressure distribution between the rotating shaft 20 and the bushing 30 due to the effect of the groove 12 , supporting the rotating shaft 20 to rotate in the bushing 30 .

[0017] The grooves 12 are arranged alternately along the extension direction of the groove area 10, and the depth of the grooves 12 decreases linearly from the center of the groove area 10 to the two edges 13, 15 of the groove area 10, forming a groove in the center of the groove area 10. Deep oil storage space. The depth of the trenc...

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Abstract

A fluid bearing includes a rotation shaft, a shaft sleeve, at least one of several slots disposed on the rotation shaft and the shaft sleeve and a lubricating fluid filled between the rotation shaft and the shaft sleeve. The number of the slots is on the decrease from the center to two edges of the slots along the radial cross-section area of the rotation shaft and the shaft sleeve.

Description

【Technical field】 [0001] The invention relates to a fluid bearing, in particular to a fluid bearing with a groove structure and good leak-proof effect. 【Background technique】 [0002] At present, fluid bearings have been increasingly applied to small motors. Fluid bearings generally include a shaft sleeve, a main shaft located in the shaft sleeve at a certain distance from the shaft sleeve, and pressure generating grooves disposed on the shaft sleeve or the main shaft at intervals, wherein lubricating fluid is stored in the space. When there is a certain relative speed between the main shaft and the bushing, a certain lubricating fluid layer is formed between the main shaft and the bushing. Due to the action of the pressure generating groove, the lubricating fluid layer exerts a certain force on the main shaft to support the rotation of the main shaft. The vibration generated by the main shaft during operation is small, the operation is stable, and the main shaft does not d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C32/06
Inventor 洪居万吴荣源
Owner FU ZHUN PRECISION IND SHENZHEN